CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Statement [Abstract]
Revenues	$ 18,095		$ 18,376		$ 15,351
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	7,507		7,639		6,325
Selling, general and administrative	3,502		3,244		2,975
Depreciation and amortization	4,541		4,780		4,026
Impairment of goodwill (Note 3)	1,092		0		0
Total operating expenses	16,642		15,663		13,326
OPERATING INCOME	1,453		2,713		2,025
OTHER INCOME (EXPENSE)
Interest expense	(1,298)		(1,319)		(1,072)
Net gain (loss) on early retirement of debt	10		(179)		(8)
Other income	59		35		3
Total other income (expense)	(1,229)		(1,463)		(1,077)
INCOME BEFORE INCOME TAX EXPENSE	224		1,250		948
Total income tax expense	463		473		375
NET (LOSS) INCOME	$ (239)		$ 777		$ 573
BASIC AND DILUTED (LOSS) EARNINGS PER COMMON SHARE
BASIC (in dollars per share)	$ (0.40)		$ 1.25		$ 1.07
DILUTED (in dollars per share)	$ (0.40)	[1]	$ 1.25	[1]	$ 1.07	[1]
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
BASIC (in shares)	600,892		620,205		532,780
DILUTED (in shares)	600,892		622,285		534,121

[1] For the year ended December 31, 2013, we excluded from the calculation of diluted loss per share 1.3 million shares potentially issuable under incentive compensation plans or convertible securities, as their effect, if included, would have been anti-dilutive.